Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2013-08-28T17:00:00

Updated: 2024-08-06T15:27:40.768Z

Reserved: 2013-02-19T00:00:00

Link: CVE-2013-2076

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2013-08-28T21:55:08.347

Modified: 2023-11-07T02:14:55.710

Link: CVE-2013-2076

cve-icon Redhat

Severity : Moderate

Publid Date: 2013-06-03T00:00:00Z

Links: CVE-2013-2076 - Bugzilla